WSP08819

• File Number: 8583
• Description: Rio Grande Decision Support System
• State: CO
• Basin: Rio Grande
• Water Division: 3
• Date: 3/1/1996
• Author: Dept of the Interior
• Title: 1996 Calendar Year Report to the Rio Grande Compact Commission
• Water Supply Pro - Doc Type: Report/Study

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002532
1996 Report to the Rio Grande Compact Commission

Bureau of Reclamation

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At Cochiti Lake, the San Juan-Chama pool was adjusted monthly to compensate for
displacement of San Juan-Chama content by deposited sediment. The maximum
allowable surface acreage (including wetlands) of the San Juan-Chama pool is 1,200
acres.

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At Jemez Canyon Reservoir, arrangements were made to replace sediment pool
evaporative losses during 1996, Since 1991, City of Albuquerque San Juan-Chama
Project water in Abiquiu Reservoir, up to 5,500 af (less 69 af of transportation losses)
has been used to replace sediment deposition and evaporative losses in Jemez Canyon
Reservoir. Such water is provided by contract between the City of Albuquerque and
the New Mexico Interstate Stream Commission dated February 21, 1986, and
amended May 16,1991.

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In 1996, the City of Albuquerque, in an agreement with the New Mexico Interstate
Stream Commission, offered an additional 1,500 af to help fill the sediment space up
to a maximum amount of 7,000 af. A total of 6,602 af (equivalent release from
Heron) was released from March to July and October to December. It suffered 91 af
of transportation losses. The releases in November and December provided additional
water to stabilize winter fishery flows below Abiquiu.

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Table 7 shows the estimated accumulated sediment deposition and San Juan-Chama
contents in Abiquiu Reservoir, Cochiti Lake, and Jemez Canyon Reservoir for 1996.

San Juan-Chama Water Accounting

Reclamation, with assistance from theU,S. Corps of Engineers, continued tOlllake'
improvements to its storage, handling, and dissemination of water accounting data.
The biggest improvements in 1996 were conversion of daily, monthly, and annual
water accounting spreadsheets to Lotus Release 5 for Windows. The new
spreadsheets automatically import data from our water accounting database. This has
eliminated hand entry of over 2,800 values and has further reduced the possibility of
data entry error. In addition, significant progress was made developing a spreadsheet
"greenbook" (the San Juan-Chama contracts accounting book), .to initially back-up and
eventually replace the existing paper, hand-worked greenbook. Reclamation continues
to provide daily and monthly water accounting data to interested users via e-mail.
Requests for data can be made to water operations staff in Albuquerque by telephone
at [phone], faxogram at [phone], or e-mail at [e-mail].

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